I'm gonna have to say that you're on the right track with the ASUS G75OJZ http://www.amazon.co.uk/gp/product/B00K7Y8VJG. It's definitely the most powerful single GPU laptop option you have and also in your budget.
ASUS also manufactures exceptional laptops with great cooling.
If you have to go with a branded laptop go with the asus, I have heard so many good reviews and I would recommend it as it is a very reliable brand as I have one from the N series. An alternative is to go to pc specialist and configure your laptop and they generally are better as you can upgrade easily, not to say that the asus cannot be upgraded easily but they charge more for the brand.
go with the lenoco y50- http://www.amazon.com/gp/product/B00K6ZIMPE/ref=as_li_tl?ie=UTF8&camp=211189&creative=373489&creativeASIN=B00K6ZIMPE&link_code=as3&tag=thepcgamhar-20&linkId=ZLPFA5O77DP6GLVV
Thats a good laptop but it can get noisy and hot while gaming as it is very slim
I'm gonna have to say that you're on the right track with the ASUS G75OJZ http://www.amazon.co.uk/gp/product/B00K7Y8VJG. It's definitely the most powerful single GPU laptop option you have and also in your budget.
ASUS also manufactures exceptional laptops with great cooling.
The lenovo y510p had that problem but they sorted it out with the newer model which is the y50 and could you please be more clear about it getting noisy?.... Thank you for your input